Re: Xen won't start its device backend?

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, May 26, 2015 at 03:33:07PM +0200, Reinoud Zandijk wrote:
> Hi folks,
> 
> I'm trying to get a NetBSD/amd64 to boot as a DomU HVM guest on a NetBSD/xen
> Dom0 (amd64). The Dom0 i got booting and running with an X server.
> 
> I have xencommons=YES in my rc.conf file and `xl list' works etc.
> 
> When i start my DomU i however get:
> -----------
> # xl create -p netbsd-hvm
> Parsing config from netbsd-hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->0000000000173884
>   TOTAL:         0000000000000000->00000000ff800000
>   ENTRY ADDRESS: 0000000000100000
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000002
> libxl: error: libxl_device.c:875:device_backend_callback: unable to connect
> device with path /local/domain/0/backend/vbd/34/769
> libxl: error: libxl_create.c:951:domcreate_launch_dm: unable to add disk
> devices
> libxl: error: libxl_dm.c:1269:libxl__destroy_device_model: could not find
> device-model's pid for dom 34
> libxl: error: libxl.c:1419:libxl__destroy_domid: libxl__destroy_device_model
> failed for 34
> libxl: error: libxl_device.c:875:device_backend_callback: unable to disconnect
> device with path /local/domain/0/backend/vbd/34/769
> libxl: error: libxl.c:1455:devices_destroy_cb: libxl__devices_destroy failed
> for 34
> --------

Do you have xenbackendd running ?
What is the value of run_hotplug_scripts in xl.conf ?

you may find some debug output in /var/log/xen/

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--